There's no telling where in the command chain this came from, but Boston talk show host Howie Carr got censored yesterday afternoon for uttering those nastiest of words: Sirius and XM. He was reading off yesterday's news about the DoJ's approval of the merger when his producer blanked out his mention of the two companies involved. Howie's station, WRKO, is owned by Entercom, a major competitor of Clear Channel -- who of course has its own opinions on censorship.